PONTOGENEIIDAE 197 



Now that Schellenberg has pointed out the differential characters of the lower lip, 

 2nd maxillae, and 1st side-plate in Bovallia and Eusiroides, which characters were not 

 utilized by Chilton, or even by Chevreux in his " seven points " (1913), both of Pfeffer's 

 names are vindicated. Also we are no longer under the obligation, when recording 

 "Bovallia monoculoides", of specifying whether we mean HaswelPs form, or Pfeffer's 

 form, or any of Stebbing's triumvirate. In fact, it is difficult to understand how the 

 species of Eusiroides can ever have been confused with Bovallia. To Chevreux's seven 

 points, Schellenberg has added three more; there is also the 4th side-plate, and if the 

 character of the integument should prove to be similar in all the species of Eusiroides 

 (cf. p. 191), twelve points of difference can be found. 



Consequently all records of "Bovallia monoculoides" should be omitted from geo- 

 graphical considerations, until the specimens on which they were based have been re- 

 examined. We may perhaps except Chilton's records (1912 and 1925) from the South 







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Fig. 118. Portions of the integuments, highly magnified, of various Pontogeneiidae : a. Bovallia gigas and 

 Djerboafurcipes. b, Eurymera monticulosa. c. Schraderia gracilis, d. Prostebbingia gracilis, e. Atyloella dentata. 

 f. Poniogeneiella brevicornis and longicornis. g. Pontogeneia simplex and Atyloella magellanica. h. Pontogeneia 

 antarctica and georgiana. i. Paramoera gregaria. j. Paramoera obliquimanus. k. Paramoera tristanensis. 

 I. Paramoera walkeri and hermit ensis. m. Pontogeneia tristanensis and Paramoera edouardi and bidentata. 

 n. Paramoera capensis. 



Orkneys, as he specifically refers to the dorsal teeth and absence of serration on the 

 postero-inferior margin of pleon segment 3. Pending re-examination, one may hazard 

 the opinion that all Australasian examples will be referred to Eusiroides [monoculoides 

 Hasw.), but not to Bovallia. 



Bovallia gigantea is a perfectly well-defined species with a definite distribution. 



Pfeffer recorded specimens of 45 mm. length, and orange- to purple-red in colour. 

 Chevreux (1913) records his specimens as being greenish brown, reddish above, eyes 

 brick-red. The colour of no. 1 is given as: "Dragons-blood red (Ridgway 5' OO-R) 

 darkest on back, palest laterally and on appendages. Eyes dark grey". 



Distribution. South Georgia; South Orkneys, shore and shallow water; South 

 Shetlands, littoral; Palmer Archipelago, 0-5 m. 



Genus Eurymera, Pfr. 

 Pfeffer, 1888, p. 102. 

 Stebbing, 1906, p. 356. 

 Schellenberg, 1929 a, p. 277. 



